An odd prime is a prime number that is odd. Also primes other than 2 (which is the unique even prime) are therefore odd primes.
Humorously, 2 might therefore be termed the oddest prime.
Odd Prime
See also
Even Prime, Oddest Prime, Prime NumberExplore with Wolfram|Alpha
References
Wells, D. The Penguin Dictionary of Curious and Interesting Numbers. Middlesex, England: Penguin Books, p. 44, 1986.Referenced on Wolfram|Alpha
Odd PrimeCite this as:
Weisstein, Eric W. "Odd Prime." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/OddPrime.html